Marker Assisted Backcross Gene Introgression of Major Genes for Blast Resistance in Rice

Kumar, Krishna; Hittalmani, Shailaja; Srinivasachary,; Shashidharhe,

doi:10.1007/978-94-015-9430-1_6

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Each of these resistant genes is effective to a series of blast pathogen races, so gene pyramiding is still a useful method for breeding new resistant varieties [110]. A number of studies show a wide range of resistance of Piz-5 that is combined with Pi1 to blast pathogens [111,112]. Thippeswamy et al [113] also reported that the CO39 pyramid carrying Pi-1 and Piz-5 genes showed higher resistance in comparison with Pi-1 or Piz-5.…”

Section: Qtls Of Rice Associated With the Disease Resistance To Blastmentioning

confidence: 99%

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

Zarbafi

Ham

2019

Agronomy

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Rice (Oryza sativa L.) is one of the most important crops that are produced as human food, directly feeding people more than any other crop. Hence, it is important to increase the yield potential of rice through improving the disease resistance to prevailing rice diseases. Blast caused by the fungus Magnaporthe oryzae, sheath blight caused by the fungus Rhizoctonia solani Kühn, and bacterial panicle blight caused by the bacteria Burkholderia glumae and B. gladioli are serious rice diseases in many rice-producing regions. In spite of the chronic damages from these major diseases, the quantitative resistance to each of them is not known very well and any available disease-resistant varieties are rare or not stable. Although gene-for-gene resistance that is mediated by an R-Avr interaction has been intensively studied for blast, quantitative (or horizontal) resistance to a broad spectrum of races in M. oryzae is still poorly understood. Identification of the quantitative trait loci (QTLs) related to these diseases and using marker technology can facilitate marker-assisted selection to screen resistant traits in individual resources, which could ultimately lead to the development of novel disease-resistant rice varieties. This article is a summary of identified QTLs that are associated with rice diseases, including blast, sheath blight, and bacterial panicle blight that can be used in breeding programs.

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Section: Qtls Of Rice Associated With the Disease Resistance To Blastmentioning

confidence: 99%

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

Zarbafi

Ham

2019

Agronomy

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“…Chen et al [9] studied the spectrum of resistance conditioned by Pi2 gene in rice by using C101A51 and found that it was resistant to 455 Philippine isolates when inoculated in greenhouse tests and suggested that Pi2 could condition resistance to many lineages of M. oryzae. The broad-spectrum resistance of Pi2 (Piz-5) and Pi-1 were complementary to most lineages of blast pathogen in India because these two genes are dominant in nature and their resistance break down is difficult by pathogens but they work in isolation too [10]. The lineage exclusion assay found that none of the 25 pathogen lineages of M. oryzae of southern India was able to overcome the blast resistance afforded by Pi1 ?…”

Section: Introductionmentioning

confidence: 98%

Mining of Blast Resistance Gene, Pi2 and Its Novel Allelic Variant from Landraces of Rice from Karnataka

Ingole

Prashanthi

Krishnaraj

2016

Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci.

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Rice blast is one of the important fungal diseases of rice, caused by Magnaporthe oryzae. Rice blast can be effectively managed by the deployment of R-genes. Pi2 (Piz-5) is one of the major blast resistant genes effective against pathogen populations in various parts of India. In the present study, Pi2 gene was mined from 83 native landraces of rice from Karnataka state, India which revealed the presence of Pi2 in 60 landraces with the frequency of 72.28 %. Further, by using sequencing based allele mining approach, allelic variants of Pi2 from 16 landraces were analysed. High nucleotide variations (InDels) in the middle region of the conserved domain sequence of Pi2 in all variants were obtained. 469 polymorphic sites were observed with a total 570 mutations and 191 InDels among 16 Pi2 variants. Among Pi2 resistant and susceptible variants, 206 mutations with 29 InDel events were observed. Comparative modeling and Ramachandran plot of Pi2 protein variants from resistant and susceptible landraces were studied which revealed the significant differences among them. One potential novel Pi2 allelic variant from landrace Vanasurya was identified for the first time. This novel effective allelic variant can be used in rice breeding programmes to enhance blast resistance.

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RETRACTED ARTICLE: Development of blast-resistant rice varieties based on application of DNA technologies

Dubina¹,

Kostylev

Garkusha³

et al. 2020

Euphytica

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Marker Assisted Backcross Gene Introgression of Major Genes for Blast Resistance in Rice

Cited by 5 publications

References 7 publications

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

An Overview of Rice QTLs Associated with Disease Resistance to Three Major Rice Diseases: Blast, Sheath Blight, and Bacterial Panicle Blight

Mining of Blast Resistance Gene, Pi2 and Its Novel Allelic Variant from Landraces of Rice from Karnataka

RETRACTED ARTICLE: Development of blast-resistant rice varieties based on application of DNA technologies

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